Sepa Environmental Checklist
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Project: Terminal 7 Site Redevelopment and Stormwater Conveyance Improvements Applicant: Port of Port Angeles SEPA ENVIRONMENTAL CHECKLIST A. Background [help] Note: Blue underlined text is revised language in response to mitigation conditions requested by the City of Port Angeles and per comments on the Shoreline Permit Application received from the Lower Elwha Klallam Tribe. 1. Name of proposed project, if applicable: [help] Terminal 7 Site Redevelopment and Stormwater Conveyance Improvements 2. Name of applicant: [help] Port of Port Angeles 3. Address and phone number of applicant and contact person: [help] 338 W. First Street Port Angeles, WA 98362 360-417-3452 Contact: Jesse Waknitz / Environmental Manager 4. Date checklist prepared: [help] 3/9/2017 6/29/2017 – Checklist Revised 5. Agency requesting checklist: [help] Port of Port Angeles (Port) & City of Port Angeles 6. Proposed timing or schedule (including phasing, if applicable): [help] Summer/Fall 2017 - Phase 1: Construction of stormwater conveyance and grading at the Port Terminal 7 Log Yard. This SEPA checklist is for Phase 1only. Summer/Fall 2018 – Phase 2: Installation of stormwater treatment at the Port Terminal 7 Log Yard. Phase 2 will undergo individualized SEPA review as soon as the “principle features of a proposal and its environmental impacts can be reasonably identified… and the environmental effects can be meaningfully evaluated.” (WAC 197-11-055) 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. [help] Summer/Fall 2018 – Phase 2: Installation of stormwater treatment and associated stormwater conveyance at the Port Log Yard. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. [help] SEPA Environmental checklist (WAC 197-11-960) 6/29/2017 Page 1 of 22 Project: Terminal 7 Site Redevelopment and Stormwater Conveyance Improvements Applicant: Port of Port Angeles The proposed stormwater improvements will be designed and constructed to meet the conditions and per the guidance detailed in the following documents: 1. Industrial Stormwater General Permit (ISGP) NPDES, State of Washington Department of Ecology, December 3, 2014. http://www.ecy.wa.gov/Programs/wq/stormwater/industrial/index.html 2. Washington State Marine Terminal AKART and ISGP Corrective Action Guidance Manual, Washington Public Ports Association, December 2014. http://www.ecy.wa.gov/programs/wq/stormwater/industrial/2014Dec.WAStateMarineTerminalCorrectiveAc tionGuideManual.WPPA.pdf 3. Administrative Order 12801, State of Washington Department of Ecology, August 3, 2015. Included as Attachment 1. 4. Waterfront Stormwater Improvements Final Engineering Report, Port of Port Angeles, December 30, 2016. Included as Attachment 2. 5. Cultural Resources Monitoring and Discovery Plan for the Terminal 7 Site Redevelopment and Stormwater Conveyance Improvements Project, Clallam County, Washington, June 27, 2017. Included as Attachement 3. 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. [help] None Known 10. List any government approvals or permits that will be needed for your proposal, if known. [help] City of Port Angeles Building/Clearing & Grading Permit City of Port Angeles Shoreline Substantial Development Permit Washington State Department of Ecology Construction Stormwater General Permit 11. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. (Lead agencies may modify this form to include additional specific information on project description.) [help] The Port proposes to install a stormwater treatment system at the Port Terminal 7 Log Yard (Site). The goal of proposed treatment system is to meet the permit benchmarks values established under the Industrial Stormwater General Permit (ISGP) administered by the Washington Department of Ecology (ECY). The first phase for the implementation of a treatment system is the construction of an improved stormwater conveyance system to direct runoff to a single outfall. Stormwater from the Site currently discharges to Port Angeles Harbor via multiple catch basins with approximately eight corresponding outfalls. Specific project elements included under this Phase 1 project (See attached Figures 2a & 2B): SEPA Environmental checklist (WAC 197-11-960) 6/29/2017 Page 2 of 22 Project: Terminal 7 Site Redevelopment and Stormwater Conveyance Improvements Applicant: Port of Port Angeles Abandonment of existing catch basins. and outfalls. Regrade Site so that overland flow conveys stormwater runoff to proposed lift station. The proposed regrading of the site will be an approximate 1 foot reshape of exiting surface contours across the 10-acre site with an estimated 3,000 cubic yards of fill and 4,000 cubic yard of export. Install settling vault, lift station/valve vault, settling vault, above ground equalization tank manhole and approximately 3,000 1,100 feet of pressure main pipe to convey stormwater to future treatment area to proposed lift station. (Treatment will be designed and constructed under Phase 2). Pipe to be 18” to 20” in diameter ductile iron, installed to depths of 18” to 48” below final surface grade. Pipes to be 8” to 24” diameter, PVC, installed to a depth of 4’ below the ground surface. Utilize existing Outfall 1, located at approximately Lat 48.131319 & Long -123.460804, for point of discharge for Phase 1 and Phase 2 of this project. In the interim, prior to the completion of Phase 2, discharge stormwater to existing City of Port Angeles storm drain and to existing Port Outfall-7. Following the construction of Phase 1 listed above the Port will conduct bench and pilot testing utilizing stormwater collected at or near Outfall 1 to aid in the final design of a treatment system. Outfall-7 and/or just prior to City storm drain line to aid in the final design of a treatment system. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range, if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. [help] The project will occur at the Port Terminal 7 Log Yard located at 1433 Marine Drive, Port Angeles, WA 98363 in Township 30 N, Range 6 West, Section 4, Clallam County. See attached Figures 1 and 2 for an overview of the project location and existing conditions. B. ENVIRONMENTAL ELEMENTS [help] 1. Earth [help] a. General description of the site: [help] (circle one): Flat, rolling, hilly, steep slopes, mountainous, other _____________ Heavily modified industrial shoreline. b. What is the steepest slope on the site (approximate percent slope)? [help] The steepest slopes in the project area occur along the armored shoreline bank. The slopes vary but are generally inclined at about 2 to 1 (horizontal to vertical). SEPA Environmental checklist (WAC 197-11-960) 6/29/2017 Page 3 of 22 Project: Terminal 7 Site Redevelopment and Stormwater Conveyance Improvements Applicant: Port of Port Angeles c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any agricultural land of long-term commercial significance and whether the proposal results in removing any of these soils. [help] The soils at the site are mapped as “Beaches” on the USDA Web Soil Survey (https://websoilsurvey.sc.egov.usda.gov/App/HomePage.htm ). From previous excavation and geotechnical work at the Site the soils/fill are known to consist of beach and tideland deposits overlain by 4’ to 12’ of fill material consisting of dredge fill sand, pit run, and industrial debris consisting of concrete debris and wood debris. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. [help] No indications or history of unstable soil are known in the immediate vicinity of the project. e. Describe the purpose, type, total area, and approximate quantities and total affected area of any filling, excavation, and grading proposed. Indicate source of fill. [help] Approximately 27,000 cy 4,000 of upland soil will be excavated and 5,000 3,000 cy of clean fill will be placed to regrade approximately 12 10 acres of the site. See attached Figure 2. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. [help] No, during construction the appropriate BMPs per the 2012 Stormwater Management Manual for Western Washington (SWMMWW) will be implemented. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? [help] The existing Site consists of 100% of impervious surfaces with a combination of heavily compacted quarry spalls/crushed rock, asphalt paving, concrete slab, and elevated concrete slab. The proposed project will repave an area of currently impervious surface (combo of above mentioned surfacing) with approximately 85,000 square feet of asphalt paving. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: [help] No, during construction the appropriate BMPs per the 2012 SWMMWW will be implemented. 2. Air [help] a. What types of emissions to the air would result from the proposal during construction, operation, and maintenance when the project is completed? If any, generally describe and give approximate quantities if known.